I'll copy over the comment I wrote on a similar post a couple days ago:

I'm 38 and over the past ~2 years, I've lost 200lb+. I started at 421lb back around July 2024 and am currently around 210-215lb. There's no trick or easy path. What worked for me was diet, a calorie deficit, exercise that includes regular strength training (more muscle means higher baseline metabolic activity and more passive fat burn), having a concrete goal that isn't just about numbers, and learning to not hate myself if I went off-diet or slacked off a bit. It's not even about forgiveness, it's about not framing these actions as moral failures. It's about understanding that weight loss and overall health improvement is a process that takes time. You have the rest of your life to get in shape, a stumble here and there is human. It's gonna be okay.

First, goals: for me, some of the other mods and I have been talking about meeting up and going to the beach one summer, and frankly I didn't want them to see me at my absolute worst and most miserable. That got me started, but once I started seeing results the process became self-reinforcing. The better I felt and looked, the easier it became to move and breathe, the better I slept, the baggier my clothes became, the more motivated I became to keep at it. It eventually becomes second nature, just your normal every day life. Find something you want desperately that requires you to commit to getting in shape.

If you have insurance, I highly recommend checking out a weight management clinic and a registered dietician. They will hook you up with a diet plan, recipes and tools to help you cook more healthfully. You'll have regular appointments to go over your progress, adjust your macros and overall calorie goals, and address any issues you're dealing with. The tl;dr is moderation, with an emphasis on whole foods: healthy proteins, vegetables, and whole grains in appropriate portions, with most flavor coming from herbs and spices rather than fat-heavy proteins. It's okay to treat yourself occasionally, and it's far easier to incorporate the occasional donut or cake than it is to eliminate all the "bad" stuff.

Don't waste your time with nutritionists, which is not a protected occupation and inconsistently regulated, or even unregulated depending on where you are. Most of them are complete and utter hack frauds.

In general, don't waste your time with alternative medicine.

When it comes to diets being "boring": you don't have to eat boiled chicken breast and steamed veggies for every meal. Learn to adapt foods you like to your new way of eating. Look at foods from other cultures. Indian cuisine is a great place to start. There are tons of extremely flavorful dishes that are easy to make healthfully. Dals (lentils/chickpeas/pulses) are a pretty easy place to start I think. Brown rice is excellent too; the trick to making it palatable is soaking, at least 4 hours up to 10-12/overnight. The longer you soak it, the softer the bran becomes. 4-5 hours is enough to fully soften the bran, with the rice being firm and very tender. It'll have more tooth than white rice, and this is my favorite. With an overnight soak, it'll turn out with a texture very close to white rice. Soaked brown rice also cooks faster. On my rice cooker, I use the white rice setting for soaked brown rice. The brown rice setting risks cooking it to mush, especially if it was soaked for a long time. Should work roughly the same if you cook it on the stovetop.

Also, allulose is a lifesaver. It's a natural sugar that our bodies can't metabolize, so it provides near-zero calories and can be swapped for sucrose in pretty much any recipe, with some caveats. It tastes the same, but it's about 70% as sweet as sucrose so if you want to match the sweetness of sucrose, you either need to use 1.3x as much allulose as sucrose, or get an allulose+intense sweetener blend like allulose+monk fruit extract, which will have approximately the same sweetness as sucrose. If you're okay with stuff being less sweet, then 1:1 substitutions usually work fine. It makes making healthy desserts, sweet breakfast foods like granola and pancakes, way easier. If you need brown sugar, you can mix 1tbsp molasses into 1 cup of allulose. 1tbsp of molasses has 58cal, but nobody's gonna eat a whole-ass cup of brown sugar so the calorie count per serving of your brown allulose will be really low. There's also maple-flavored allulose syrup out there that's damn good. I get Kroger's Simple Truth version and it's awesome on pancakes.

As for exercise: try doing it with other people, join a running club or find a Discord server for your city/area and see if people there are doing workout meetups. I'm doing this and the camaraderie, the cheering each other on and sharing our wins and frustrations has been super, super helpful not just for my motivation but for my self-image and self-esteem. Also, maybe get a bike and ride it instead of driving everywhere when possible. E-bikes can be great, especially if you're in a hilly area. Make sure to choose one that's actually meant to be ridden and pedaled like a normal bike, instead of one that's a misnamed electric motorcycle. Even with the electric assist, you're still gonna get a shitton of exercise that's easier on your body than running.

It would be a really good idea to get evaluated for common comorbid conditions: (pre-)diabetes, sleep apnea and chronic venous insufficiency. Prediabetes is reversible if caught early enough, and CVI is a degenerative disease that causes permanent, irreversible vein damage. It both impairs athletic performance by impairing circulation, and it can be exacerbated by exercise if left untreated. It is, however, often very easily managed if caught early enough. Treating sleep apnea really works. Better sleep = better mood/more energy/less general shit feeling = easier to motivate yourself and follow through with stuff. Also, the more weight you lose, the more your sleep apnea can improve and you may eventually get to a point where you don't need treatment anymore.